Charging Circuit design Solar panel for a 12 V car battery - Electronic Circuits Projects Diagrams Free

Thrisk · 21st July 2004, 05:01 AM

I am designing a Sun tracking Solar panel and wish to know how to get the sun's energy from my Solar panel to trickle charge the Car battery.
If anyone could provide a cicuit design it would be greatly appreciated.

Thankz

Johnson777717 · 21st July 2004, 07:47 PM

Try this link and look under "Solar Power Schematics" There are a couple that are worth looking into. I've never built any of them, so I don't know how confident they are.

http://www.commlinx.com.au/schematics.htm

Also, check out this battery charging tutorial for Sealed Lead Acid battery charging. Definately some good info here if you have the time to read.

http://www.web-ee.com/primers/files/fsect5.pdf

Good luck!

Klaus · 22nd July 2004, 01:03 AM

You did not say what size solar panel you have. The smaller ones (<10W) can usually be connected directly to the battery as they are designed for trickle charging. Measure the maximum voltage at the panel (with no battery connected), if it is around 16-17V its a trickle charge panel. The bigger solar panels have more cells ( 36 against 30), have an open circuit voltage of >20V and need a regulator to manage the charging current.
Klaus

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

21st July 2004, 05:01 AM	(permalink)
Thrisk	Charging Circuit design Solar panel for a 12 V car battery I am designing a Sun tracking Solar panel and wish to know how to get the sun's energy from my Solar panel to trickle charge the Car battery. If anyone could provide a cicuit design it would be greatly appreciated. Thankz __________________ Procrastination is the Art of Keeping Up with Yesterday

21st July 2004, 07:47 PM	(permalink)
Johnson777717	Try this link and look under "Solar Power Schematics" There are a couple that are worth looking into. I've never built any of them, so I don't know how confident they are. http://www.commlinx.com.au/schematics.htm Also, check out this battery charging tutorial for Sealed Lead Acid battery charging. Definately some good info here if you have the time to read. http://www.web-ee.com/primers/files/fsect5.pdf Good luck!

22nd July 2004, 01:03 AM	(permalink)
Klaus	You did not say what size solar panel you have. The smaller ones (<10W) can usually be connected directly to the battery as they are designed for trickle charging. Measure the maximum voltage at the panel (with no battery connected), if it is around 16-17V its a trickle charge panel. The bigger solar panels have more cells ( 36 against 30), have an open circuit voltage of >20V and need a regulator to manage the charging current. Klaus